======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '601'
                                          'artist'  'Passport'
                                     'text_people'  'Klaus Doldinger'
                                         'release'  'progsoup 15'
                                           'title'  'Continuation'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fusion', 'jazz', 'progressive rock', 'jazz fusion', 'jazz rock']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '49'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '132.791'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x006\x004\x006\x003\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x008\x004\x002\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x004\x003\x006\x008\x003\x008\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x006\x004\x006\x003\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x008\x004\x002\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x004\x003\x006\x008\x003\x008\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x95w# \x82ýyM\x93õ/Ípüáy'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x95w# \x82\xfdyM\x93\xf5/\xcdp\xfc\xe1y')
'PRIV:WM/WMCollectionID:\x95w# \x82ýyM\x93õ/Ípüáy'  PRIV(owner='WM/WMCollectionID', data=b'\x95w# \x82\xfdyM\x93\xf5/\xcdp\xfc\xe1y')
'PRIV:WM/WMContentID:\x84©>YcOÀC\x85\x81\xa0\x8fqyÞT'  PRIV(owner='WM/WMContentID', data=b'\x84\xa9>YcO\xc0C\x85\x81\xa0\x8fqy\xdeT')
'TALB' (Album/Movie/Show title)                     'progsoup 15'
'TBPM' (BPM (beats per minute))                     '132.791'
'TCOM' (Composer)                                   'Klaus Doldinger'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Continuation'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '000000601548'
'TPE1' (Lead performer(s)/Soloist(s))               'Passport'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Atlantic'
'TRCK' (Track number/Position in set)               '49'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['fusion', 'jazz', 'progressive rock', 'jazz fusion', 'jazz rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.05 dB'
'TXXX:replaygain_track_peak'                        '0.575513'

========================== row from database ==========================
                                              'id'  1411538
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 15/885 passport - continuation.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  601
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  14440448
                                           'mtime'  1620736568
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP 885 passport continuation rock cppex progressive;set pl progspace
                                      'tag_artist'  Passport
                                     'tag_release'  progsoup 15
                                       'tag_title'  Continuation
                                             'bpm'  132.791
                                    'search_title'  'continuation':1
                                   'search_artist'  'passport':1
                                  'search_release'  'progsoup':1
                                     'search_rest'  '885':3 'classicprogpsy':1 'continuation':5 'cppex':7 'passport':4 'pl':12 'progressive':8,10 'progsoup':2 'progspace':13 'rock':6 'set':9,11
                                    'search_combo'  '885':6 'classicprogpsy':4 'continuation':1A,8 'cppex':10 'passport':2B,7 'pl':15 'progressive':11,13 'progsoup':3C,5 'progspace':16 'rock':9 'set':12,14
                                    'tag_tracknum'  49
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['fusion', 'jazz', 'progressive rock', 'jazz fusion', 'jazz rock']
                                        'tag_date'  1971
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620736567.5432425  (2021-05-11 14:36:07)
                             'size'  14440448